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1 Journal of Ecological Engineering

1 2024

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Effect of Differences in Bio-activators and Fermentation Time on the Properties of Liquid Organic Fertilizers Based on Local Rabbit’s Urine Waste

Said Muhammad Irfan, Mustabi Jamila, Al Tawaha Abdel Razzaq, Sirajuddin Sitti Nurani, Azizah Nur, Al-Assaf Raha

Journal of Ecological Engineering

2024

Vol. 25, nr 8

264--275

Rabbits, which are commonly raised as livestock in many rural areas of Asian countries, produce liquid waste called urine that can have negative environmental impacts. In order to tackle this issue, the development of technology is necessary to effectively process this waste into a form that can be utilized without causing harm to the environment. Urine contains valuable organic compounds that can be used as raw materials for the production of liquid organic fertilizer (LOF). The quality of this fertilizer is dependent on the availability of microorganism substrates and the duration of fermentation. The objective of this study is to investigate the influence of different substrates and fermentation periods on the properties of liquid organic fertilizer. The raw material used in this research is locally sourced rabbit urine. The experiments were conducted in a laboratory at the Faculty of Animal Science, Hasanuddin University, Indonesia. Three types of substrates were employed: bioactivator animal substrate (BAsb), bioactivator plant substrate (BPsb), and commercial microorganism (C-mic) as the control. Two different fermentation periods were tested: 2 weeks and 4 weeks. The data were analyzed using a completely randomized design (CRD) with factorial patterns. The results revealed that the type of bioactivator substrate had a significant impact (p<0.05) on the N-organic, C/N ratio, P2O5, and K2O content. However, pH and C-organic showed no significant effect (p>0.05). Additionally, fermentation time had a significant effect (p<0.05) on C-organic, N-organic, and the C/N ratio, but pH did not have a significant effect (p>0.05). Moreover, there was a significant interaction (p<0.05) between the substrate type and fermentation time in the LOF-RU process. The production of N-organic content from local rabbit urine yielded promising results. For the LOF-RU production process with BAsb or BPsb, fermentation periods of up to 4 weeks can be applied.